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Acquisitions - General Information (Details) - UZ Energy ¥ in Millions, $ in Millions | Sep. 15, 2025 USD ($) | Sep. 15, 2025 CNY (¥) | Jul. 25, 2025 USD ($) | Jul. 25, 2025 CNY (¥) | Sep. 30, 2025 USD ($) | Sep. 15, 2025 CNY (¥) | Sep. 14, 2025 USD ($) | Sep. 14, 2025 CNY (¥)
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Business Combination, Description [Abstract] |  |  |  |  |  |  |  |
Business combination, date of acquisition agreement | Jul. 25, 2025 | Jul. 25, 2025 |  |  |  |  |  |
Business combination, voting equity interest acquired, percentage (as a percent) | 100.00% |  |  |  |  | 100.00% |  |
Business combination, name of acquiree | Shenzhen UZ Energy Co. Ltd. | Shenzhen UZ Energy Co. Ltd. |  |  |  |  |  |
Business combination, effective date of acquisition | Sep. 15, 2025 | Sep. 15, 2025 |  |  |  |  |  |
Business combination, price of acquisition, expected, performance targets for contingent consideration met and not exceeded |  |  | $ 25.8 | ¥ 183.5 |  |  |  |
Business combination, price of acquisition, expected |  |  | $ 13.1 | ¥ 93.5 |  |  |  |
Business Combination, Consideration Transferred [Abstract] |  |  |  |  |  |  |  |
Business combination, consideration transferred | $ 11.7 | ¥ 83.3 |  |  |  |  |  |
Business combination, capital contribution, working capital requirement | 12.6 | ¥ 90.0 |  |  |  |  |  |
Business Combination, Contingent Consideration, Liability [Abstract] |  |  |  |  |  |  |  |
Deferred consideration, current | 3.3 |  |  |  |  | ¥ 23.5 |  |
Deferred consideration, non-current | $ 8.4 |  |  |  |  | ¥ 59.9 | $ 8.4 | ¥ 59.9
Business Combination, Contingent Consideration, Liability, Valuation Technique | us-gaap:BlackScholesMertonModelMember |  |  |  |  | us-gaap:BlackScholesMertonModelMember |  |
Business combination, contingent consideration, range of outcomes, minimum, amount |  |  |  |  | $ 0.3 |  |  |
Business combination, contingent consideration, range of outcomes, maximum, amount |  |  |  |  | $ 11.9 |  |  |

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